NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 21
·17665-17670
·
IF 3.201
Zengchen Liu,Weijie Yang,Boshi Tian,Jin Liu,Wenping Zhu,Genwu Ge,Lina Xiao,Yuning Meng
In this paper, an excellent water-soluble platform derived from a β-cyclodextrin derivative and graphene oxide was synthesized and characterized. Moreover, by a supramolecular host–guest self-assembly interaction between the organic molecule and the water-soluble platform, an interesting supramolecular system was fabricated successfully. By fluorescence experiments toward several metal ions, a higher response toward Al3+ than other commonly coexistent metal ions in absolute water media (pH = 7.2) was shown. Meanwhile, a large binding constant (3.89 × 1012 M−1) between them was calculated by fluorescence titration experiments. In addition, fluorescence imaging in living cells was studied systemically, which exhibited a high fluorescence sensing activity toward Al3+. This study provides the first detailed supramolecular host–guest self-assembled nanosensor from graphene oxide and β-cyclodextrin derivatives. Its water-solubility and excellent sensing activity effectively enhanced the application value of the fluorescent nanosensor for tracking and detecting Al3+ in the environment and in organisms.
研究领域:
分析化学
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材料科学
·
生物医学工程
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RSC Advances
·
2016
·Vol. 6
·期 30
·25420-25426
·
IF 3.289
Yang Li,Caiyun Liao,Shanshan Huang,Hui Xu,Baozhan Zheng,Juan Du,Dan Xiao
In the paper, a novel fluorescent sensor L based on phenolphthalein derivative bis-Schiff base was synthesized and characterized. Chemosensor L was found to be an excellent specific receptor for Al3+ via significant fluorescent enhancement resulting from the inhibition of an internal charge transfer (ICT) process and an efficient chelation-enhanced fluorescence (CHEF) effect. A good linear relationship was obtained in the Al3+ concentration from 0 to 50 μM with the detection limit reaching below 15 nM. Moreover, the addition of 2 equiv. of Cu2+ can almost completely quench the emission intensity of L due to a ligand–metal charge transfer (LMCT) process. The resulting L–Cu(II) complex showed a satisfactory sensing ability toward cysteine (Cys) through naked-eye and recovered fluorescence intensity with the detection limit of 0.36 nM. The fluorescence recovering process was caused by the stronger coordination ability of Cys with Cu2+ than with L and therefore free L was released from the L–Cu(II) complex. Furthermore, the sensor was used to detect Cys in practical samples with a high accuracy.
研究领域:
分析化学
·
生物化学
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2018
·
IF 2.88
Xu Tang,Zhi Zhu,Renjie Liu,Liang Ni,Yue Qiu,Juan Han,Yun Wang
A novel fluorescence probe L2 based on coumarin has been designed and synthesized. The probe L2 can be used for relay recognition of metal ions Al 3+ and anion F − in the aqueous HEPES buffer (0.05 M, pH = 7.4), and build a OFF-ON-OFF detection system. The probe showed high selectivity and sensitivity to target ions in the process of relay recognition, and the corresponding detection limit could be as low as 0.014 μM (Al 3+ ) and 0.03 μM (F − ). Besides, the geometry optimizations of probe L2 and [L2 + Al 3+ ] complex were carried out using the Gaussian 16 program based on DFT, and the identification mechanism of the probe was also discussed by the mass spectrometry and theoretical calculations. Moreover, the probe has also been successfully applied to detection of target ions in living cells.
研究领域:
分析化学
·
生物医学
·
材料科学
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PubMed
高影响因子
Polymers
·
2022
·Vol. 14
·期 19
·3970
·
IF 4.967
Ming Chang,Xiaomin Ma,Xianshu Dong,Yuping Fan,Ruxia Chen
It is important to identify an environmentally friendly and efficient flocculant that can replace polyacrylamide for the solid–liquid separation of coal wastewater. In this study, to explore whether chitosan can be used as an environmentally friendly and efficient flocculant for the solid–liquid separation of coal wastewater, AlCl3–chitosan was used to conduct flocculation–sedimentation and dewatering tests under different chitosan dosages and shear-strength conditions for the prepared coal wastewater. Focused beam reflectance was measured to dynamically monitor the number of refractory fine particles, and the settled flocs were photographed and analyzed with microscopy to explore the effect of AlCl3–chitosan on the flocculation settlement effect and floc characteristics. The synergistic mechanisms of AlCl3and chitosan were investigated using quartz crystal dissipative microbalance and zeta potential measurement. The results showed that the addition of chitosan can significantly improve the flocculation–sedimentation and dewatering effects of coal wastewater. A reasonable dosage under a certain shear strength is conducive to the reduction of fine slime particles, which results in a compact floc structure, increases the floc size, and improves the settling effect. The synergistic effect of AlCl3–chitosan improved the electric neutralization and adsorption bridging abilities of the chitosan, and the mixed solution of AlCl3and chitosan had stronger adsorption on the carbon surface. This study provides a new approach to the selection of flocculants for coal wastewater treatment.Keywords:coal wastewater;chitosan;solid–liquid separation;FBRM;QCM−D
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高影响因子
JOURNAL OF FLUORESCENCE
·
2022
·Vol. 33
·期 1
·177-184
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IF 2.525
Sang Fuming,Xiong Tiedan,Wang Weijie,Pan Jianxin,Shi Huahua,Zhao Yan
A novel fluorescence probe for the detection of Al 3+ was developed based on methionine protected gold nanoclusters (Met-AuNCs). A fluorescent Schiff base (an aldimine) is formed between the aldehyde group of salicylaldehyde (SA) and the amino groups of Met on the AuNCs, and developed for selective detection of Al 3+ in aqueous solution. Al 3+ can strongly bind with the Schiff base ligands, accompanied by the blue-shift and an obvious fluorescence emission enhancement at 455 nm. The limits of detection (LODs) of the probe are 2 pmol L −1 for Al 3+ . Moreover, the probe can successfully be used in fluorescence imaging of Al 3+ in living cells (SHSY5Y cells), suggesting that the simple fluorescent probe has great potential use in biological imaging.
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高影响因子
Journal of Magnesium and Alloys
·
2022
·
IF 11.813
Xinfang Zhang,Ruihong Li,Xiaoyan Feng,Xue Pang,Xu He,Zili Jin,Huiping Ren,Dashuang Wang,Kailin Li,Xingjian Dai,Zhilan Du,Quan Zhou,Yuxin Zhang
A hierarchical superhydrophobic Al-Li layered double hydroxide (LDH) films with different Li + /Al 3+ molar ratios of 1:1, 1:2, 2:1, pH value of 11.5 and reaction temperature of 125 °C, have been fabricated on the surface of Mg-5Li-1Al (LA51) alloys by hydrothermal method following the characteristics of controllable cation structure and exchangeable anion between layers. The properties of the films were investigated by X-ray diffractometer (XRD), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). XRD and SEM results indicate that the Al-Li LDH films are successfully prepared on LA51 alloys. The contact angle (CA) was measured to be about 100.7°, indicating that the surface wettability of the film converted from hydrophilic to hydrophobic by surface modification. The corrosion resistance of Al-Li LDH films was evaluated by Tafel polarization curve and electrochemical impedance spectroscopy (EIS). Surprisingly, Tafel polarization curve and EIS test reveal that the Al-Li LDH films prepared at the molar ratio of Li + /Al 3+ 1:2, pH 11.5 and temperature 125 °C have better corrosion resistance in 0.1 M NaCl neutral solution. In addition, the formation mechanism and corrosion mechanism of the films on the surface of LA51 alloy are also proposed. It provides innovative synthetic materials and novel design ideas for the preparation of high-efficiency anti-corrosion coatings on LA51 alloys, whose application can be extended in industrial fields.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Shuai Zou,Gang Wang,Yiming Zhang,Caihong Xue,Huiyuan Chen,Guijun Yang,Hui Nan,Haomin Wei,Hong Lin
Lithium titanate (Li 4 Ti 5 O 12 , LTO) has several disadvantages as active material for Li-ion batteries (LIBs) such as low conductivity and poor capacity. To overcome these drawbacks and specifically to improve electrical performance of LTO, we used solvothermal method to synthesis LTO and to dope it simultaneously with Al and Mn. Doped LTO was then incorporated into composites containing graphene (G), carbon nanotube (CNT) or carbon quantum dots (CQDs) to enhance specific capacity and conductivity of LIB anodes containing these composites as active materials. To have a further study of different carbon materials composite with doped LTO, these materials we obtained were thoroughly characterized. LTO doping and incorporation into composites not only increased its specific capacity and also decreased its impedance. Al 3+ and Mn 4+ substituted Ti 4+ located at 16 d sites. First cycle specific capacity values and impedance values of anodes consisting of composites containing doped LTO and G, CNT or CQDs were 261.7, 286.2 and 296.5 mA h/g (at C/10 rate) and 13.99, 8.28, 18.79 Ω, respectively. Capacity retention after 100 cycles for these anodes was 84.6, 90.67 and 83.4%. LTO doping by Al 3+ and Mn 4+ and combining it with G, CNT or CQDs effectively improved its electrochemical performance. The best performance was obtained for anodes containing composites consisting of a combination of doped LTO and CNT.
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SYNTHETIC METALS
·
2019
·
IF 2.87
Zheng Li,Fucai Dai,Jing Wang,Shujun Wang,Liwei Xiao,Lele Li
Al 3+ has no spectroscopic characteristics and its coordination ability is very poor. Therefore, the detection of Al 3+ is a challenging task. To address this issue, here we report a diacylhydrazone-based fluorescent chemosensor ( L ) for Al 3+ structurally characterized by HRMS and NMR spectroscopy. The selective test revealed that L had a high selectivity towards Al 3+ with a turn-on response in DMF/H 2 O (v/v, 8: 2) buffer solution. The combination ratio between L and Al 3+ was determined to be 1: 2 as supported by Job’s plot analysis and NMR titration experiment. The recognition of Al 3+ was without interference of other competing species. The detection limit was calculated to be as low as 2.41 μM. Moreover, the probe was proved to be of low cytotoxicity in physiological condition and it was applied to image Al 3+ in living cells successfully.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Ruiyuan Zhuang,Yuxin Wang,Junhong Wang,Jianfeng Zhan,Jiangnan Yan,Yongqing Li,Yaru Chen,Wenhui Mo,Jian-chun Wu,Jianhong Yang,Lixiang Wang
Aluminum ion batteries (AIBs) are deemed an encouraging prospect for energy storage applications owing to their beneficial attributes, including considerable theoretical specific capacity, heightened safety measures, affordability, and plentiful availability of materials. However, the inherent characteristics of cathode materials have greatly limited the further development of AIBs. In this work, SnS 2 @CNFs composites were prepared via a combination of hydrothermal and electrospinning strategy. Specifically, SnS 2 nanosheets, resembling flakes in their two-dimensional form, uniformly coated on the carbon fibers, forming a three-dimensional interconnected network seamlessly integrated with the continuous carbon substrate. This structure is conducive to shortening the ion transmission path, ensuring sufficient electrolyte contact, and facilitating electron transfer and transfer at the phase interfaces. As a self-supporting electrode for AIBs, the SnS 2 @CNFs electrode exhibited remarkable cyclability, retaining a residual capacity of approximately 70 mA h g −1 with a Coulombic efficiency close to 97 % after 500 cycles at 100 mA g −1 . The good cycle stability originates from the flexible carbon substrate effectively alleviating the volume expansion phenomenon caused by ion deintercalation in SnS 2 . In addition, first-principles calculations show that the substitution behavior of aluminum atoms in SnS 2 crystals exhibits obvious selectivity, but exceeding the energy threshold of conventional substitution reactions indicates that reactions are unlikely to occur. By constructing models to explore the embedding path of aluminum ions in SnS 2 crystals, the results showed that the embedding behavior mainly occurs in the van der Waals gap interstitial rather than within the crystal monolayer, and the sulfur atom top position is used as the optimal embedding site.
研究领域:
材料科学
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电化学
·
计算物理学
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高影响因子
RESOURCES CONSERVATION AND RECYCLING
·
2025
·
IF 10.9
Yusen Wu,Jiahua Lu,Keyi Lin,Jujun Ruan
With the development of the new energy industry, a large number of photovoltaic modules are produced, used, promoted, and will reach the end of their life cycle shortly. The recycling of photovoltaic modules is an important work in the closed-loop development of the new energy industry, and the first step of recycling is decapsulation. Hydrometallurgical decapsulation has been considered an important recovery method due to energy saving and the ability to recover all components of photovoltaic laminates. However, the problems of low decapsulation efficiency and pollutant discharge need to be solved. This article reports a new green linalool solvent employed for decapsulation. The experimental results show that the delamination rate of the glass of the laminates with particle sizes of 0.5, 1, 2, and 3 cm can all reach 100% in 4 hours. Furthermore, we propose a strategy to improve the efficiency of decapsulation by enhancing the bond-breaking tendency of the crosslinking bridge formed by the coupling agent in the EVA-glass interface. It indicates that the Lewis acid properties of Al 3+ and its coordination effect with nitrogen atoms promote the hydrolysis of C N bonds in the amid group. The increase of decapsulation efficiency by adding Al 3+ increases with the decrease of laminate particle size. When the particle size is 0.5 cm and 1 cm, the efficiency is increased nearly two times. This study provides a new idea for improving the green attributes and efficiency of hydrometallurgical decapsulation of photovoltaic laminates.
研究领域:
材料科学
·
环境科学
·
化学工程
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高影响因子
ACTA MATERIALIA
·
2021
·
IF 8.203
Enbo Li,Wen Ma,Peng Zhang,Chennan Zhang,Yu Bai,Hongxia Liu,Shufang Yan,Hongying Dong,Xiangfeng Meng
A series of Al 3+ -doped SrZrO 3 perovskite powders with low infrared emissivity were prepared. The doping-effect of Al 3+ on infrared radiation ability and thermophysical properties was investigated in detail by theoretical and experimental methods. As a result, Al 3+ -doped SrZrO 3 perovskite's infrared emissivity is related to its electronic structure and particle morphology . It can be adjusted by the Al 3+ -doped concentration. The SrZr 0.86 Al 0.14 O 2.935 powder with stronger electronic conductivity and flake particles has the lowest infrared emissivity with 0.256 in 3-5 μm waveband at 590 °C and 0.383 in 8-14 μm waveband at 550 °C. Al 3+ -doped SrZrO 3 perovskites still maintain ideal thermal stability and low thermal conductivity above 800 °C. Base on both low infrared emissivity and thermal conductivity, Al 3+ -doped SrZrO 3 tablets exhibited weaker thermal radiation intensity in the high-temperature condition and might be the potential low thermal infrared materials servicing under extreme temperature in the future.
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 2
·758
·
IF 4.6
Hao-Jie Bai,De-Yan Qi,Hong-Wei Li,Yuqing Wu
A significant emission enhancement (>100-fold) of glutathione-capped bimetallic gold and copper nanoclusters (AuCuNC@GSH) was achieved by assembling with Al3+ions and by assembly-induced emission enhancement (AIEE). Further chelation of myricetin to Al3+resulted in emission quenching of AuCuNC-Al3+, which was applied to specifically detect myricetin. Two linear responses were shown in the range of 0–1.5 μM and 1.5–50 μM, separately, leading to a low limit of detection at 8.7 nM. The method was successfully and accurately applied to myricetin determination in grape juice, which showed good application for real samples. Finally, the in-depth mechanism revealed that both the chelation of myricetin and Al3+and the inner filter effect (IFE) between myricetin-Al3+and AuCuNC-Al3+greatly contributed to the quenching response of myricetin. Therefore, the present study provides an easy way to improve the fluorescence property of metal nanoclusters. Additionally, it supplies a cost-effective and easily performed approach to detect myricetin with high selectivity and sensitivity.
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